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Finding the Fourth Proportional to 363,939.16, 502,229.31 and 198,368.55

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Solution

The fourth proportional to 363,939.16, 502,229.31 and 198,368.55 is: 273,744.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,939.16 : 502,229.31 = 198,368.55 : x
  2. Step 2: Convert to fraction form
    363,939.16/502,229.31 = 198,368.55/x
  3. Step 3: Cross multiply
    363,939.16x = 502,229.31 × 198,368.55
  4. Step 4: Simplify right side
    363,939.16x = 99,626,499,992.20
  5. Step 5: Solve for x
    x = 99,626,499,992.20/363,939.16
  6. Step 6: Final answer
    x = 273,744.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.